Is This A Good Crabgrass Killer?

by Diane
(N. Illinois)

I plan on using your advice re: corn gluten meal, but have some questions. I have a recipe for a homemade crabgrass killer that includes baby shampoo, hydrogen peroxide and tea. Should I use it or not?

If I do, how long after should I apply the corn gluten meal, and finally, when can we do the lawn overseeding?

This lawn is large, the previous owners trashed it, we've improved it, but still fight the crab grass. We live in N.Illinois.


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Mar 31, 2011
Is This A Good Crabgrass Killer?
by: Jim - Organic Lawn Care Guide

Hi Diane,

I'll start by addressing your homemade crabgrass killer remedy. I'm not familiar with it, so I don't want to pass judgment. Having said that, it sounds like it wouldn't hurt to try it. I have no idea how long the effects of it would last, so you're on your own about timing regarding when to apply the Corngluten Meal.

It's best to do the lawn overseeding first to establish new grass growth right away. You can apply the corn gluten meal afterwards, taking note of timing restrictions.

You can usually put the corn gluten meal down about six weeks after seeding. You want to give the grass a chance to get established, and a good measure we use is to wait until the grass is up and germinated, and has been cut about 3 times before you to the application.

When purchasing the grass seed, get the very best quality certified seed that you can afford. You want to have the best quality grass plants after all your hard work. With grass seed, you get what you pay for.

Don't be shy with the amount of grass seed that you put down, either. That's a common mistake we see many people make. You want a good, even covering, so use a grass seed spreader to get good coverage.

I'd also recommend, if you can, that you include another seeding in your fall lawn care chores. The idea is to establish a nice thick lawn, with lots of healthy grass plants that have good root systems.

Remember to follow all of this up with regular maintenance such as proper fertilizing, watering and mowing.

Be sure to let us know how it goes.

All the best - Jim

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